Use-after-free in Linux kernel - CVE-2026-31471
Published: April 24, 2026
Vulnerability identifier: #VU127678
CSH Severity: Low
CVSS v4.0: CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Clear
CVE-ID: CVE-2026-31471
CWE-ID: CWE-416
Exploitation vector: Local access
Exploit availability:
No public exploit available
Vendor: Linux Foundation
Affected software:
Linux kernel
Linux kernel
Detailed vulnerability description
The vulnerability allows a local user to cause a denial of service.
The vulnerability exists due to a use-after-free in the iptfs_clone_state function when cloning IPTFS state. A local user can trigger a failed clone operation to cause a denial of service.
The issue occurs when allocation of the reorder window fails during clone setup.
How to mitigate CVE-2026-31471
Install security update from vendor's repository.